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Computer Organization And Architecture-December Question Paper

Computer Organization And Architecture-December

Course:Bachelor Of Science In Information Technology

Institution: Kca University question papers

Exam Year:2009

1
UNIVERSITY EXAMINATIONS: 2009/2010
FIRST YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE IN INFORMATION TECHNOLOGY
BIT 1106: COMPUTER ORGANIZATION AND ARCHITECTURE
DATE: DECEMBER 2009 TIME: 2 HOURS
INSTRUCTIONS: Answer question ONE and any other TWO questions
QUESTION ONE (COMPULSORY 30 MARKS)
a) Identify three tasks performed by a network server apart from the storage of users’ files.
(3 Marks)
b) Explain two precautions that a student should take when using USB drives for saving important
work. (4 Marks)
c) Describe two input devices that would be used in a pilot training computer simulation
(4 Marks)
d) Differentiate between SRAM and DRAM and with reasons state which one is suitable for making
cache memory (4 Marks)
e) List any two pointing devices, which can be used to input data into computers and state the
appropriate areas of application. (4 Marks)
f) Describe one advantage and one disadvantage of sending the images as bitmapped files instead of
vector graphics files. (4 Marks)
g) Differentiate between computer Architecture and Computer Organization. (4 Marks)
h) Explain the term Device drivers (3 Marks)
2
QUESTION TWO (20 MARKS)
a) The main role of the CPU is to execute instructions. Explain the steps involved during the
execution of an instruction. (8 Marks)
b) Explain the following terms and state how they affect system performance.
a. Bus width
b. Word size (2 Marks each max 4 Marks)
c) Briefly explain the boot-up process and state how you can troubleshoot if the process was not
successful. (8 Marks)
QUESTION THREE (20 MARKS)
a) Define the term Hexadecimal (2 Marks)
b) Convert the following decimal numbers to binary. (5 Marks)
i. 33
ii. 5
iii. 23
iv. 222
v. 34
c) Convert the following Hexadecimal numbers to binary. (5 Marks)
00000021
00000016
0000002D
0000000C
00000008
d) Name and explain any two Encoding Systems used by computers today. (8 Marks)
QUESTION FOUR (20 MARKS)
a) Explain the meaning of the following terms within the context of computer systems
i) Peripherals devices
ii) Virtual storage
iii) ROM BIOS
3
iv) Co-Processor
v) Motherboard (5 Marks)
b) i) What is a system bus? (3 Marks)
ii) Explain the three major components of a system bus. (3 Marks)
c) Briefly discuss THREE major file organization methods and for each explain the access method
applicable. (9 Marks)
QUESTION FIVE (20 MARKS)
a) There are three (3) main types or approaches towards systems maintenance. Briefly describe these
approaches (9 Marks)
b) List FOUR reasons why computer systems need secondary storage. Would a system with magnetic
disk and optical storage system meet all the storage requirements? (9 Marks)
c) What causes a hardware conflict? (2 Marks)

Computer Organization And Architecture-December Question Paper

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